1 加法 72 等于多少？
1 + 72 = 73
1加法72 等于 73
竖式演算
验算
- 用减法验算：73 − 72 = 1
- 用减法验算：73 − 1 = 72
相关题目
1 + 71 = 72
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3 + 72 = 75
4 + 72 = 76
5 + 72 = 77
6 + 72 = 78
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